Back pressure regulator

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Description

FIG. 1 is a right side elevational view of a back pressure regulator showing my new design, the left side being a mirror image of the right side shown;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a top plan view thereof; and

FIG. 5 is a bottom plan view thereof.

Referenced Cited
U.S. Patent Documents
D33306 October 1900 Perkins
D45994 June 1914 Hedmark
D96405 July 1935 Murphy
D218519 August 1970 Mese
2568026 September 1951 Pigott
2686534 August 1954 Montelius
2831500 April 1958 Fennema et al.
3236256 February 1966 Valentine
3409037 November 1968 Nelson
3487852 January 1970 Kikendall
4321945 March 30, 1982 Chubat-Courrede
Patent History
Patent number: D282562
Type: Grant
Filed: Feb 3, 1983
Date of Patent: Feb 11, 1986
Assignee: Baird Manufacturing Company (Tulsa, OK)
Inventor: Raymond H. Looney (Tulsa, OK)
Primary Examiner: James R. Largen
Law Firm: Head, Johnson & Stevenson
Application Number: 6/463,554
Classifications
Current U.S. Class: D23/21